30. November 2011

Mittels eines Beschleunigungssensors (MMA 7455 Accelerometer) soll in Processing eine Figur oder Form erstellt werden, welche auf Gestik reagiert. Bilder 1-5: Werte des Sensors als Liniengrafik in Processing visualisiert. Bilder 6-8: Werte in 3D-Formen umgewandelt. Bilder 9-14: Extrudiertes Matterhorn. Mittels eines Codes der Processing-Library habe ich Bilder in 3D-Werte umgewandelt und konnte diese dann über den Beschleunigungssensor steuern.

//Extrude Matterhorn PushMatrix

import processing.serial.*;
Serial myPort;

int xVal, yVal, zVal;
int xPosition = 0;
float xRotation, yRotation;

PImage extrude;
int[][] values;
float angle = 0;

void setup()
{
background(0);
size(800, 800, P3D);
println(Serial.list());
myPort = new Serial(this, Serial.list()[0], 9600);

extrude = loadImage("matterhorn.jpg");
extrude.loadPixels();
values = new int[extrude.width][extrude.height];
for (int y = 0; y < extrude.height; y++) {
for (int x = 0; x < extrude.width; x++) {
color pixel = extrude.get(x, y);
values[x][y] = int(brightness(pixel));
}
}
}

void draw()
{
background(255);
translate(width/2, height/2);
pushMatrix();
translate(30,30,30);

float xValCorrected = float(xVal)/64;
float yValCorrected = float(yVal)/64;
float zValCorrected = float(zVal)/64;

popMatrix();

// float xRotation = atan((xValCorrected)/(sqrt(sq(yValCorrected)+sq(zValCorrected))));
// float yRotation = atan((yValCorrected)/(sqrt(sq(xValCorrected)+sq(zValCorrected))));

if (zValCorrected>0)
{
xRotation = radians(map(xVal, -64, 64, 0, 180));
yRotation = radians(map(yVal, -64, 64, 180, 0));
}

else
{
xRotation = radians(map(xVal, -64, 64, 180, 0));
yRotation = radians(map(yVal, -64, 64, 0, 180));
}

rotateX(xRotation);
rotateY(yRotation);

for (int y = 0; y < extrude.height; y++) {
for (int x = 0; x < extrude.width; x++) {
stroke(values[x][y]);
point(x, y, -values[x][y]);
}
}

println(xVal+"\t"+yVal+"\t"+zVal);
}

void serialEvent(Serial myPort)
{
if (myPort.available() > 0)
{
String completeString = myPort.readStringUntil(10);
if (completeString != null)
{
trim(completeString);
String seperateValues[] = split(completeString, ",");
xVal = int(seperateValues[0]);
yVal = int(seperateValues[1]);
zVal = int(seperateValues[2]);
}
}
}

Passwort Film: MMA7455 (Film ist leider Hochformat...)